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AWM3300V Flow Sensors Medical Use Microbridge Mass Airflow Amplified
FEATURES
1 Laser trimmed for improved sensor
interchangeability
1 Flow sensing up to 1.0 SLPM
1 Low differential pressure sensing
Like the AWM2000 Series, the dual
Wheatstone bridges control airflow measurement. The AWM3000 Series
is amplified; therefore, it can be used to increase
the gain and to introduce voltage offsets
to the sensor output. The schematic in
Figure 3 depicts the amplification circuitry
on board the sensor. Also, the heater control circuit (see Figure
1) and the sensing
bridge supply circuit (see Figure 2) are on
board the package.
Specifications:
| Output voltage | 5 V |
| Operating supply voltage | 8 V to 15 V |
| Port size | 5.08 mm |
| Housing material | Silicon |
| Operating temperature | + 85 C |
| Minimum operating temperature | -25 C |
| Unit weight | 10.800 g |
Notes:
1. Initial warm-up time for signal conditioned circuitry is 1
minute max.
2. Output Voltage is ratiometric to supply voltage.
3. Temperature shifts when sensing differential pressure correlates
to the density change of the gas over temperature. (See Application
Note 1.)
4. Maximum allowable rate of flow change to prevent damage: 5
SLPM/1 sec.
